Signal compressing apparatus
AssigneeVictor Company of Japan, Ltd.
InventorsShoji Ueno, Norihiko Fuchigami, Yoshiaki Tanaka
Life of this patent
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Abstract
An input signal is quantized into a quantization-resultant signal. The quantization-resultant signal is compressed into a compression-resultant signal. The compression-resultant signal is formatted into a formatting-resultant signal corresponding to a predetermined format for a digital recording disc. The formatting-resultant signal includes segments corresponding to user data areas prescribed in the predetermined format. The compression-resultant signal is placed in the segments of the formatting-resultant signal. The formatting-resultant signal is encoded into an encoding-resultant signal of a CD format. The encoding-resultant signal is recorded on a recording medium.
Claims4
A signal expanding method comprising the steps of:
- receiving an encoding-resultant signal of a predetermined recording-medium format from a digital disc including a DVD, the encoding-resultant signal containing audio information resulting from quantization of an audio signal at a quantization degree higher than a degree of quantization for a CD and at a quantization sampling frequency higher than that for a CD, the quantization sampling frequency including 96 kHz;
- using a first decoder and thereby decoding the received encoding-resultant signal into a formatting-resultant signal corresponding to a predetermined format for a digital disc including a DVD, the formatting-resultant signal including segments corresponding to user data areas prescribed in the predetermined format, a compression-resultant signal being placed in the segments of the formatting-resultant signal;
- deformatting the formatting-resultant signal into the compression-resultant signal;
- and
- using a second decoder and thereby expanding the compression-resultant signal into a quantization-resultant signal by a Huffman decoding process.
A signal expanding method comprising the steps of:
- receiving an encoding-resultant signal of a predetermined recording-medium format from a digital disc including a DVD, the encoding-resultant signal containing audio information resulting from quantization of an audio signal at a quantization degree higher than a degree of quantization for a CD and at a quantization sampling frequency higher than that for a CD, the quantization sampling frequency including 96 kHz;
- using a first decoder and thereby decoding the received encoding-resultant signal into a formatting-resultant signal corresponding to a predetermined format for a digital disc including a DVD, the formatting-resultant signal including segments corresponding to user data areas prescribed in the predetermined format, a compression-resultant signal being placed in the segments of the formatting-resultant signal;
- deformatting the formatting-resultant signal into the compression-resultant signal;
- and
- using a second decoder and thereby expanding the compression-resultant signal into a quantization-resultant signal by one of an orthogonal decoding process and a Huffman decoding process.
A signal compressing method comprising the steps of:
- quantizing an input audio signal into a quantization-resultant signal at a quantization degree higher than a degree of quantization for a CD and at a quantization sampling frequency higher than that for a CD, the quantization sampling frequency including 96 kHz;
- compressing the quantization-resultant signal into a compression-resultant signal by a Huffman encoding process through the use of a first encoder including a Huffman encoder;
- and
- using a second decoder and thereby formatting the compression-resultant signal into a formatting-resultant signal corresponding to a predetermined format for a digital disc including a DVD, the formatting-resultant signal including segments corresponding to user data areas prescribed in the predetermined format, the compression-resultant signal being placed in the segments of the formatting-resultant signal.
Dependencies are inferred from the claim text.